Post by trusty-squire on Which database to use? ^{CODESYS Forge talk (Post)}
How large and how complex? It's tough to make a recommendation without additional details. The simplest thing is to just use data arrays (or even arrays of arrays). Not knowing your requirements, it might be sufficient and the simplest option is often the best. https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_datatype_array.html You might also look into using Recipes? https://forge.codesys.com/prj/codesys-example/recipe-manageme/home/Home/ Some more complex options below. https://forge.codesys.com/prj/codesys-example/element-collect/home/Home/ https://store.codesys.com/en/mysql-library-sl.html
Last updated: 2025-03-04

Post by kuapiz on Camera RTSP Feed ^{CODESYS Forge talk (Post)}
Hello, I'm facing the same problem, I can access the FLIR AX Series camera through the IP converter software (go2rtc). In the CODESYS 3.5.19 patch 7 software, the streaming does not appear in the webvisu even using the URL "http://xxx.xxx.x.xxx:1984/stream.html?src=flirr". I used the "RTC" and "MJPG" modes. HW: PFC200 750-8217/600-000. FW: v27. If anyone has a solution, could you help us?
Last updated: 2025-03-05

Post by darko7417 on When running as a service, CodesysControl doesn't write log files to the disk (and other CmpLog related issuess) ^{CODESYS Forge talk (Post)}
Wow! Thanks mr Strucc. Changed to service to run as local acc, and now log works! The service (run from local acc) is using this config: C:\Users\SRV\AppData\Roaming\CODESYS\CODESYSControlWinV3\C4DBB537\CODESYSControl.cfg The path you first mentioned (c:\Windows\System32\config\systemprofile\AppData\Roaming) has no CODESYS folder in it (Windows 11 24H2 b26100.3194). Thanks for your help :)
Last updated: 2025-03-06

Post by wayne-riesterer on Assignment Efficiency - Repetitive Assignment vs IF statement ^{CODESYS Forge talk (Post)}
Hello Can anyone see any problems with constant assignment as in the following statement: Coils[0] := Coils[0] OR (Buttons[0] AND Sensors[0] > 6); Rather than using the more verbose and vertically-larger: IF NOT Coils[0] AND Buttons[0] AND (Sensors[0] > 6) THEN Coils[0] := TRUE; END_IF Also, is the test expression short-circuited in the latter case? In other words, will the runtime move on after it sees Coils[0] = FALSE AND? Thanks
Last updated: 2025-03-07

Post by agentcousto on (no subject) ^{CODESYS Forge talk (Post)}
Hello, I have developed a Python script that I run to import XML files into my project. For this, I use the Python function import_xml(). Everything was working fine when I was using Codesys platform plugins version 2.6.1.2320, but since I upgraded to versions 2.7 and even 2.8, some files are no longer imported correctly. After some research, I identified that all the files containing variables of the type "POINTER TO" are affected. I have attached a screenshot of the error I am encountering. Do you know about this bug? Do you plan to fix it?
Last updated: 2025-03-26

Post by lookingforhelp on CODESYS v3.5 SP18 ^{CODESYS Forge talk (Post)}
Hello @community, i hope i will get a solution for following problem. I am using CODESYS v3.5 SP18. At the visualization i dont see the action for the element which i could set below the InputConfiguration-Section. I found a topic about that, but this could be resolved through activate the Advanced Checkbox. But in my case it did not work. See the screenshots. I hope someone know this problem and have a solution. Thank you in advance.
Last updated: 2025-04-17

Post by lookingforhelp on CODESYS v3.5 SP18 ^{CODESYS Forge talk (Post)}
Hello @community, i hope i will get a solution for following problem. I am using CODESYS v3.5 SP18. At the visualization i dont see the action for the element which i could set below the InputConfiguration-Section. I found a topic about that, but this could be resolved through activate the Advanced Checkbox. But in my case it did not work. See the screenshots. I hope someone know this problem and have a solution. Thank you in advance.
Last updated: 2025-04-17

Post by andrej on Creating, using an external Function. ^{CODESYS Forge talk (Post)}
Hello all, could you tell me whether I need an additional license in order for v3x64 to execute the DLL? Is there some manual on how to proceed? Other than the rather generic message loading Component failed Lib_XMATH.dll I have no further hints. Many thanks for your feed back. PS: I tried a similar experiment (i.e. generating a native dll for windows and having it executed by the Python VM this worked without an issue).
Last updated: 2025-05-05

Post by marks on Siemens G120X via Ethernet/IP ^{CODESYS Forge talk (Post)}
The goal is to control a Siemens G120X VFD via Ethernet/IP. The .eds is installed into the device repository. The VFD is added and is using the connection and assemblies from the eds. It appears to reach the VFD but fails to establish a connection. The status message is: Diag String: 'Adapter configured. Open all connections.' The PLC is a raspberry pi 4, running codesys target version 4.13.0.0. The development environment is CODESYS V3.5 SP21 + (64-bit). Anyone have experience with this combination? Alternately, where should I look next? Thank you, Mark
Last updated: 2025-05-06

Post by patliby on Cannot Find "Automatically Generate POUs" Option ^{CODESYS Forge talk (Post)}
I would like to enable the feature to automatically generate POUs for Project/Library properties in some of my library/project files. The Codesys help pages indicate it should be on the bottom of the Project Information Summary tab, but mine has no such options (see screenshot). Is there somewhere I have to enable this overall feature or any other prerequisite I am missing? I am using Codesys 3.5.19.20 Reference https://content.helpme-codesys.com/en/CODESYS%20Development%20System/_cds_obj_project_information.html#UUID-9ddc3572-a024-5a49-c0c1-31677991a419_id_c95bfe46c6c18a67c0a8640e01715107_id_0a188ec6fa561b9fc0a8640e0019d8bf
Last updated: 2025-05-08

Post by gabrielarffa on Modbus TCP/IP having problems with global variables ^{CODESYS Forge talk (Post)}
I'm using Modbus TCP/IP to communicate Codesys with Elipse E3 as the master for a college project. I have made a list of global variables to organize the programming in two different POUs. The problem is, when I try to do the mapping of variables, the program informs me of an error due to the identifiers having a "." on their names. Do I have to reorganize my code to make it an unified block or is there a way to declare their names without changing all the code structure?
Last updated: 2025-05-20

Post by gabrielarffa on Modbus TCP/IP having problems with global variables ^{CODESYS Forge talk (Post)}
I'm using Modbus TCP/IP to communicate Codesys with Elipse E3 as the master for a college project. I have made a list of global variables to organize the programming in two different POUs. The problem is, when I try to do the mapping of variables, the program informs me of an error due to the identifiers having a "." on their names. Do I have to reorganize my code to make it an unified block or is there a way to declare their names without changing all the code structure?
Last updated: 2025-05-20

Post by josul on Web Client HTTPS Communication Issue ^{CODESYS Forge talk (Post)}
Thank you for the suggestion. There is a certificate created in the quarantine directory relating to the URL used for the webclient FB. This certificate should have been valid as it was created only the week before this problem was encountered. I investigated a separate location using the same https URL and it has 2 certificates in the same quarantine directory, 1 is created almost 200 days ago, the other over 100 days ago. There have been no similar problems encountered with these certs or https at all.
Last updated: 2025-06-09

Post by imdatatas on Use MC_Home without enabling the drive for homing method 35 ^{CODESYS Forge talk (Post)}
Hello, As far as I know, no matter which home mode is selected, the axis must be in Standstill mode to run MC_Home according to PLCopen state machine. However, if the function you want can already be done from a parameter in the driver of the vendor you are using, you can try to perform the same function by sending the required value to that parameter via communication with the SDO write command. Regards, Imdat
Last updated: 2025-06-25

Post by jari-koivuluoma on Finding out exception code position ^{CODESYS Forge talk (Post)}
Is it possible to find out the code position from where the exception originated using information from this log entry? 2025-07-02T13:56:19Z, 0x00000011, 8, 81, 3, #### Exception: *EXCEPTION* [<excpt>AccessViolation</excpt>] occurred: App=[<app>Application</app>], Task=[<task>Task</task>] 2025-07-02T13:56:19Z, 0x00000011, 8, 81, 3, #### Exception: *SOURCEPOSITION* App=[<app>Application</app>] area=<area>2</area>, offset=<off>13349868</off>
Last updated: 2025-07-02

Post by hickan on safety cpu cannot go online ^{CODESYS Forge talk (Post)}
Hi! I am using abb ac500 in automation builder v2.7 I have a problem with a new project. In the normal mode I have no problems, but in safety mode i cannot go online. I get 'Communication Error (#0) Logout Performed' message. I have tried changing the adress (level 1) in communication parameters. I tried 0.0.0.0.0 and 0.1.0.0.0 and 1.1.0.0.0 but it did no difference. What do you think could be causing this? Thanks!
Last updated: 2025-07-08

Post by yannickasselin on Dynamically enabling/disabling Modbus slave devices in runtime (performance issue with timeouts) ^{CODESYS Forge talk (Post)}
I would definitely try using the "Reconfigure" function block from "CAA Device Diagnosis@ library. https://content.helpme-codesys.com/en/libs/CAA%20Device%20Diagnosis/3.5.17.0/CAA-Device-Diagnosis/Function-Blocks/Reconfigure/Reconfigure.html#:~:text=This%20function%20block%20reads%20and,take%20effect. Although I have not tried it with Modbus, I had great success with EtherNet/IP, Profinet and EtherCAT. You can also have a look at the other functions in this library. There are useful functions to help iterate through all the nodes under a master node.
Last updated: 2025-08-12

Post by sandro66 on Application-based license Modbus Channels ^{CODESYS Forge talk (Post)}
Hi Gatto, Using version 3.5.21.xx, it is no longer possible to use Modbus function blocks (I make extensive use of these FBs.)as shown in the example. https://content.helpme-codesys.com/en/CODESYS%20Examples/_ex_modbus_example.html The compiler detects one Modbus instance for each instance of the communication FB block. The example program above, although simple, reports 8 Modbus instances when compiled with the latest version. Codesys Support says that you must use fieldbus I/O mapping, but this will result in the loss of the ability to programmatically modify communication parameters. Sandro
Last updated: 2025-09-04

Post by pernockham on Engineering IDE from linux? ^{CODESYS Forge talk (Post)}
An update note. Still using linux/Qemu. Still happy, but sometimes some things are harder. I lost the "bridge" connection to my VM (meaning for instance I couldnt "scan network" and find local units. Have spent tons of hours to find out why. Finally it seems the traffic got blocked by the firewall/iptables so needed to set rules for that. So friendly note that rules must allow forward traffic to/from you configured host bridge device.
Last updated: 2025-09-22

Post by monteta on Automation without UI ^{CODESYS Forge talk (Post)}
Problem solved, Once the perform_network_scan() is done, y just had to recover the address and using set_gateway_and_address(). Now i'm looking how to deploy all my device's applications on the PLC, I guess it will looks like : for app in allapplication: with online.create_online_application(app) as onlineapp onlinedevice = onlineapp.get_online_device() online.set_default_credentials(x,y) try: onlineapp.login(OnlineChangeOption.Keep, False) except Exception as e: msg = str(e).lower() if "rescan" in msg : print("PLC service might be off") elif "targetdo" in msg: print("Bad credentials") else print(msg) else: onlineapp.create_boot_application()
Last updated: 2025-09-29

Post by arvindkumar on Wago plc not going back to RUN Mode after Power failure ^{CODESYS Forge talk (Post)}
Hi im using wago pfc750-8207 plc and my programming software was codesys v2.3, im facing some issue in my plc after power failure my plc not going back to run mode sometimes, i did sourecode download, boot application created and still facing this issue, out of 10 power failure 8 times its going to run mode some time its missing to go run mode and only sys indication is in on condition Kindly please help me.
Last updated: 2023-12-15

Post by mputaggio on Recipe Manager - RecipeManCommands, load & write wrong values, Bug? ^{CODESYS Forge talk (Post)}
Hello, We encountered the same issues on both recipe library versions 4.2.0.0 and the newest 4.3.0.0. The Arrays of structs get saved correctly but loading them restores only some indexes, while others get lost or completely wrong. We have been using the same recipes for the last two years on recipe manager vers. 3.5.17 withoud issues. There also seems to be a different behaviour in vers. 4.3.0.0 but it's still incorrectly loading the recipes. Did you find any workaround or solution? Codesys version used: 3.5.19.50
Last updated: 2023-12-15

Post by svn123 on In Simulation Mode, logic is not executing ^{CODESYS Forge talk (Post)}
Please check the attached snapshot. I am converting an int to real and storing in rVlv01_SV and then scaling the value using LIN_TRAFO. In the bottom Status Bar of Codesys, both RUN and SIMULATION are visible. When I enter value 100 as input to INT_TO_REAL instruction and press Ctrl-F7, the value can be seen at the input but the logic seems not to work. I searched for help but could not find anything relevant. What could be the reason. Codesys ver3.5.11 svn
Last updated: 2023-12-25

Post by rodberna on Library for arrays ^{CODESYS Forge talk (Post)}
Hi, I'm creating a program where I need to handle arrays, like: - Declare lenght variable arrays - [array(1..var) of "sometype"]. This is not possible in pure codesys, right? - Know array lenght, min, max, avg values in runtime - append/delete itens in an array - and so on Is there a library know for this in codesys. Is it possible to build our own libraries using some high level language like python or java script?
Last updated: 2024-01-10

Post by sturmghost on Visualization using methods and cyclic ST-calls ^{CODESYS Forge talk (Post)}
I found a way to do it: You can use, for example, the text variable property of any visualization element and call a function in it. Example: Write a test POU as a function (FUN), like MyTestFun which need a boolean Variable as an input value. Now write into the text variable property: MyTestFun(bBooleanValue) Thats it. The function is called at each visu_task cycle.
Last updated: 2024-01-22

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